Fix whitespace.
diff --git a/src/main/java/org/apache/commons/io/input/TailerListener.java b/src/main/java/org/apache/commons/io/input/TailerListener.java
index 015c109..3fb8cba 100644
--- a/src/main/java/org/apache/commons/io/input/TailerListener.java
+++ b/src/main/java/org/apache/commons/io/input/TailerListener.java
@@ -59,7 +59,7 @@
     void handle(String line);
 
     /**
-     * Handles an Exception .
+     * Handles an Exception.
      * <p>
      * <b>Note:</b> this is called from the tailer thread.
      * @param ex the exception.